Tubular apparatus



(No Model.)

F. M. ASHLEY. TUBULAR APPARATUS.

, Patented Septr25, 1894 fiw X. M 214446 7%. M

' RNEY UNITED STATES PATENT OFFICE.

FRANK M. ASHLEY, OF HAWTHORNE, NEW JERSEY.

TUBULAR APPARATUS.

SPECIFICATION forming part of Letters Patent No. 526,553, dated September 25, 1894.

Application filed October 5, 1892. Serial No. 447,925. (No model.)

To all whom it may concern.-

Be it known that I, FRANK M. ASHLEY, a citizen of the United States, residing in the town of Hawthorne, county of Passaic, and State of New'Jersey, have invented certain new and useful Improvements in Tubular Apparatus, of which the following is a specification.

This invention relates to tubular apparatusin which are employed tubes having extending through them other tubes, said innor and outer tubes being independently connected with end chambers, and the chambers being so arranged in relation to a boiler, furnace, and other apparatus, as to permit the heating of liquids or gases in their circulation through the outer tubes.

This invention is capable of use for heating water, in generating steam, as in a steam boiler, and also for heating a ourrentofwater or other liquid incontinuous circulation.

The object of. the invention is to provide an improved tubular apparatus of this character, by means of which a more perfect cit"- culation and result is attained and in which the parts are better adapted to sustain pressure and are economical and strong.

Referring to the accompanying drawings,

I in which the invention is shown as employed in the form of heating apparatus, and in which similar letters of reference indicate likeparts: Figure 1 is a side elevation, partly in section, of a tubular apparatus, constructed in sections of one head being preferably located I at right angles to the sections of the other.

Each of the sections A are of oval or elliptical shape in cross-section, thus strengthening and better adapting the same to resist the steam pressure therein, which advantage is due to the superior elasticity thus imparted to the sections. The outer tube B of each set of tubes communicates with a section A at each'end, and the inner tube B thereof extends through .a section A at each end. The tubes B and B are preferably separated from the sections A Each section A of one head A, is parallel and common to a horizontal row of tubes B B, while each section A of the other head A is parallel and common to a vertical row of such tubes, thus producing a direct inter-communication of the several sections whereby the required circulation of the water or steam, or both, in the heads and tubes is maintained. This circulation of the water or steam may be promoted by arranging the tubes B B in an inclined position, as

shown in Fig. 1. w

The tubes B B may be separably jointed to the sections A in various ways, but are preferably jointed as shown in Figs. 2 and 3.

Fig. 2 is a detailed View of the form in which I construct my end heads.

A is a heavy filling piece, to which the edges of the sheet metalbody A are secured, by riveting or otherwise. In the exposed side of the filling piece are formed grooves A into which the ends of the outer pipes 13 fit,so.that the outer pipes will form braces against which the filling pieces of the two opposite end heads will rest and will thereby be prevented from being blown out by the pressureof the steam. The inner pipes B pass through the filling piece A and through the .outer side of the sheet metal body A. A nut 15'. is then screwed down over the end of the pipe against the sheet metal body, thus forming a flange against which the body will be forced by the outward pressure of the steam in the endhead. As the pipe B also passes through to the outer side of the opposite end head and is there connected in the same manner, it will also serve as a brace to prevent the sheet metal body of the end head from being blown outward.

In Fig. 3 is shown a modified form of joining the inner tube to the end section. After the tube B is passed through the end section A a collar 13 is fitted over the end of the tube and against the end section. The end of the tube isdhen turned over and headed against this collar, and the nut B which enterial B inserted between the nut and the end head. If preferred I may screw the nut down on thetend of the tube against the ring of packing material and not use the collar Bf, but I prefer to use the'collar as the" joint is thereby made much stronger. Again, I may dispense with the nut andturn theend of the tube over and bead it against a washer which bearsupon a ring of packing material inserted betweenthewasherand the end section. V y

The tubes B B are inclosedi'na-fire chainber-O, as shown.

'With this arrangement of tubes B B, and

. heads A, as set forth, water supplied-toeither of the heads A- isreceived- .in'the spaces-be "tween tubes .B B and is? exposed to the: ac-

tion of the heat in chamber Cand limtheinner tubes B, whereby .a largearea of .heating surfaceisthus obtained and-1a rapidgener ation of steam produced in the boiler The heat, .afterpassing over the tubes :13 sand through tubes B, escapes through a'flue O.-

vAt the opposite sides of therfire chamber c, and at a point next above the grate O of said chamber are located pipes D, for the purpose of partially heating the fe'ed'water I for the end heads and tubes by means of a fire on the grate. Each set of "thesefeed water heating pipes D has return couplings D and is connected by a'pi-pe 1) leading from one of these couplings to one of the heads A, which in turnmare connected by a pipe D with a-suitable feed pump.

The lower part of eachof the headskA is connected by means of pipes G to a mud drum 0, so as to render this drum common to E both/[hemud drum havin'gsa suitable outlet, which is not shown in thedrawin'gs. Eachof the heads A isalso" connected by suitable pipes I to a steam drum I located above the tubes B B at the top of 'theflfire chamber G'.

The spent heat discharging fromchamber 0' thus acts directly onvthe steam drum- I,'-with a tendency to superheat thesteam 'therein. Having thus described my invention, I claim-'- 1. In the hollowend heads ofa tubular-apparatus as herein setforth,=the combination of a filling piece,a sheet metal body fastened thereto, and external and-internal tu-bes',rsaid external tubes fitting into a groovein the filling piece and said internal tubes passing through the filling piece and the sheet metal bod 2. In the hollow endhea'dsofa tubular'apparatus as hereinset forth, the combination of a filling piece,- a longitudinalsheet metal body fasten-ed thereto; and externaland internal tubes,said external tubesfittinginto a'groove inthe filling piece'and. said internal tubes passing through thefillingp'iece and the sheet metal body. j

of a filling piece, a sheet metal body fastened theretog-and external and internal tubes, said external tubes fitting into a groove in the filling piecerand'sai'd internal tubes passing l through the filling piece and the sheet metal ibodyand being secured" thereto by a nut, a

wring; offire-proof packing materialsbeing inserted between the nut and the end head.

- 5. In a'tubularapparatusash'ereirr set forth, abutting whead sections of oval or elliptic shape; formed-of sheet metal and having a longitudinal filling piece secure'd thereto, with passages for theinternal tubes-and recesses :for the external tubes in combination with screwsrings whioh clamp thesaid internal and external tubes to" thesections.

6. In atubular apparatus as'herein set forth,

2 abutting end sections of oval-or elliptic shape for-med of sheet-metal and having a longitudi nal filling piece secured thereto;with passages for the internal tubes and recesses-for the ex- :ternal tubes, in combination with screw rings :01" nuts which clamp thesai'dinternal and external tubes to the-sectionsanda ring of packing material being interposed between'the nut x and the end: section;

7 In atubular apparatusas'herein set forth,

aabuttin'g en d sections of I oval or elli ptic" shape formed of sheetmetal andhavi'ng a longitudi- 1 nal filling. piece securedthereto,-with passages for the internal tubes aud-rec'essesfor the exaternal tubes,in combination with screw rings it or'nuts which clamp the: said internaland external tubes to .the'secti'ons and a ring of fire proof packing material being interposed between thewnutand theend section.

8. .The combination witha fire chamber, of

a a tubular apparatus consisting of hollow heads formed of abutting hollowsections of oval or elliptic shape, a numberof tubes each icomposedof-external and internal tubes, the

latter projecting through the hollow sections,

and the former communicating with the hol- Elow sectionsa mud drum connected to each oftthe heads-anda steam drum located above thetubes in the-line of draft of the firecham- 1 beriand connected toitheheads, and feed-wa- 1 ter heating pipes located next above the grate ofthe fire chamber and connected with one of th'eaheads.

9. Thecombination with a tirechamben of =a'tubular apparatus consisting of Ihollow end heads formed of abutting hollow sheet metal sections of oval 0r elliptic shape, anumber of above the grate of the fire chamber and con- :0 tubes each composed of external and internal nected with one of the heads.

tubes, the latter projecting through the hol- In testimony whereof I subscribe my signalowhsections and the former communicating ture in presence of two witnesses.

wit the hollow sections, a mud drum connected to each of the heads, and a steam drum FRANK ASHLEY located above the tubes in the line of draft of Witnesses:

the fire chamber and connected to the heads, WM. A. ROSENBAUM,

and feed water heating pipes located next FRANK S. OBER. 

